Oil container



FIG. 1 is an elevational view of an oil container showing our new design;

FIG. 2 is a bottom plan view;

FIG. 3 is an elevational view looking from the right of FIG. 1;

FIG. 4 is a top plan view; and

FIG. 5 is a view looking from the left of FIG. 1. 

The ornamental design for an oil container, as shown and described. 